Map: Cannot open user profiles in new tab: Need to re-login, and then sent back to start page. | Multiple tabs do not work?

[dreirund]

When I browse the map, click a marker, and then middle-click on the username to open it in a new tab, I am requested to log in again (and after logging in I get again to the starting page of sleepy.bike, not the user profile).

Sometimes actually it directly loads the profile, but in most cases I just see the login page on the new tab.

And after logging in there and reloading the map page, I have to re-login there.

Seems that multiple tabs with the same login do not work, and all other tabs get logged out as soon as I login in another tab? (It is the same browser with the same cookie context for all those tabs.)